Question

A ball is dropped from a height of 20m. its velocity increases uniformly at the rate of 10m/s^2. with what velocity will it strike the ground? and after what time?​

Answer 1

Explanation:

Answer is 20m/s

solution is in the attached pic ...

Answer 2

Answer:

the explanation is given below

Explanation:

AS given in the picture below -

d = 20m

initial velocity (u) = 0

Final velocity (v) = ?

Acceleration = 10m/s²

3rd equation of motion ;

2as =v² -u²

so, 2× 10×20 = v² - 0²

400 = v²

v= √400

=20m/s